Solve a real problem and the world is yours.
When valuing a startup, add $500k for every engineer, and subtract $250k for every MBA.
Solve a real problem. You don't start a company because you want to be an entrepreneur or the fame and glory that comes along with it. You become an entrepreneur to solve a real problem.
Recessions are great because they unlock the best people.
Tell anyone and everyone your idea without fear they're going to steal it.
It's okay to doubt yourself, it's okay to feel down; just never give up.